Improvement in snow-plows for railways



T. DOUGHERTY. snow PLOW FOR RAILWAYS.

Patented Dec. 27,1870."

inventor Witnesses' y/wm 1 ms warns on. mam-who wnsnmamu o c U NITEDSTATES PATENT CFFIGE.

IMPRQVEMENT IN SNOW-FLOWS FOR RAH-WAYS.

t'pccification forming part of Letters Patent No.1 10,446; datedDecember 27, 1870.

To all whom it may co'i'we'rn:

Be it known that I,'Tn3EnIUs DOUGHERTY, of the city and county ofPhiladelphia and State of Pennsylvania, have invented new and usefulImprovements in Snow-Flows; and-I do hereby declare the following to bea clear and exact description of the nature thereof, sufficient toenable others skilled in the art to which my invention appertains tofully understand and use the same, reference being had to theaccompanying drawing making part of this specification, in which-- IFigure 1 is a perspective view of the device illustrating my invention.Fig. 21s a bottom view.

Similar letters of reference indicate correspondin g parts .in the twofigures.

My invention consists in a railway snowplow which is independent of thelocomotive, and in which its shovels receive rotary motion throughintermediate gearing by -means of drivin g-rods which are attached tothe wheels of the plow, and to receive power from the lo comotive. Bythis means the wheels of the plow cannot s1ip,.and thus prevent therotation of the shovels. Side pieces or wings are hinged to the plow,and have springs ar= ranged therewith, so that snow will bepressedoutside of the track, while the win gs will give to posts or otherobstacles on the road.

In the drawing, f represents the forward end of the plow, which isinclined, and -by which the snow is raised and delivered to therevolving shovels b.- Each shovel consistsofsuitably-forniedblades,radiating from asleeve, c, which is made to slipon a shaft, 0, which passes through the platform 1' of the plow. Thesesleeves are notched or perforated, and by means of keys or bolts j arefirmly secured to their shafts 0, but are readily removable, whendesired, for purposes of adjustment or repairs. Tothe shafts of thereare fixed gear wheels 9 g, which mesh with similar wheels near theforward end of the plow to guide it upon the track and take the weightof the snow. To the sides of the plow are hinged wings k k, havingsprings so arranged that snow'will be pressed outside of the track,while the wings are not interfered with by posts, or otherwise along theroad. a a are drivingrods which are secured to the running-wheels of theplow, and extend so as to be connected of snow around and about saidshovels. I

obviate this great defect by the employment of the driving-rods a.

When the engine starts, therunning-wheels of the shovels will surely berotated. The slipping tracks may cause theformer to fly, but this willnot stop the shovels. Said running-wheels cannot slip owing. totheir-connection with the engine.

It is evident that my device possesses superior advantages for thepurposes intended, and when no longer needed its driving-rods are to be,detached from thelocomotive, and the plow, can then be moved out of theway and laid by for future-use.

What- I claim is- 1. The spring wings k. at, the side of the I plow,substantially as and for the purpose dey driving-rods a, arranged inrelation to each otherand' to the running-wheels of the plow,substantially as andfor the purposes described. The above specificationof my invention signed and. witnessed, at Philadelphia, this 13th day ofAugust, A. D. 187.0.

TIBERIUS DOUGHERTY. Witnesses: 7

MICHAEL. Q mK, THos. WELHAMF

